The effect of epoxy floor coating, surface hard and smooth, good impact resistance; uniform color, bright, seamless; easy maintenance, low maintenance costs, and has a good decorative effect. 1. Construction materials: The main materials are solvent-free floor coatings epoxy primer, intermediate coatings and topcoatings; auxiliary materials are Emery and quartz powder. 二、施工工艺
Two. Construction technology
1. grassroots treatment
Cleaning and grinding, grinding wheel grinding machine to the concrete surface of floating particles, cement slurry and adherent garbage debris grinding, clean up. The ground gap is blown to dust and debris by air pump.
2. concrete slot treatment
The surface of the slit is tightly packed. Mix 5 to 1, add the right amount of emery, and make the thick porridge. Check the east half part of the workshop to deal with the gap first, and the other parts are all post-processing gaps. The concrete fault block is cut into grooves by cutting machine, and is filled and leveled by flexible epoxy resin mortar.
3. priming paint
Using solvent-free epoxy primer, primer A yellow, primer B black brown, mix ratio A:B=4:1, adding appropriate amount of emery. Use the special rolling brush to brush the brush 2 times after rolling vertically and evenly.
4. medium mortar
Use solvent-free epoxy medium coat, mix in proportion to 5:1, add appropriate amount of 40-100 mesh quartz sand to stir evenly, scrape 1-2 times with a plaster. After curing, special scratching machine is used to smooth the scratch. No one is allowed to enter.
5. sides applied to the bottom.
Mixture A:B=4:1, A is the surface color paint, B is the white paint, without adding any material, full scrape once. Use the surface coating on the periphery and equipment edge, and use the brush to deal with it 1 times in advance.
6. brushing paint
According to the requirements to add color, the same mix proportion A: B = 4:1, A for the surface of the color paint, B for white paint, in addition to adjust the consistency with thinner, after adjusting the thinner consistency to the primer color cover, and no pinholes, bubbles and other defects. First times rolling and spreading horizontally and vertically, rolling and rolling, rolling and coating each other 1 times, covering all the grass-roots.
7. wear-resistant layer
Rolling with epoxy abrasion resistant finish for 1 times can significantly improve the finish and wear resistance of the floor. The total thickness required is 3~5 mm.
Natural curing or spray curing agent can withstand heavy load after curing for 7 d. During maintenance, avoid water or other solution to invade the surface.
When the temperature is 25 degrees, the 2~3 value of D can reach 80% of the strength design value. The drum can not be knocked hollow with a small hammer; the height difference of 2_m is less than 3 ~ 4_m m; the brake test is carried out on the ground with a driving school truck, and the surface layer is unchanged; the interface is smooth, uniform in color, and there is no obvious traces of construction drum and batch knife, and the gloss should not be less than 70%. There is no pinhole, no bubbles and no wrinkles. A large area of construction is compared with the specimen without water absorption and no dust.
Three. Treatment of base concrete crevice defects and surface pinholes.
(1) After the construction of concrete crevice surface layer, folds were found on the 2nd to 3rd_d spot checks, and the 3rd to 4th_d spot checks showed that the folds were increased and empty, and cracks were cut and treated in time.
(2) when the surface pinhole is found, when the upper person does not stick to his feet, he will use a pen to brush.
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